<template>
    <div>
        <div class="demo-upload-list" v-for="item in uploadList">
            <template v-if="item.status === 'finished'">
                <img :src="item.url">
                <div class="demo-upload-list-cover">
                    <Icon type="ios-eye-outline" @click.native="handleView(item.url)"></Icon>
                    <Icon type="ios-trash-outline" @click.native="handleRemove(item)"></Icon>
                </div>
            </template>
            <template v-else>
                <Progress v-if="item.showProgress" :percent="item.percentage" hide-info></Progress>
            </template>
        </div>
        <Upload
            ref="upload"
            :show-upload-list="false"
            :default-file-list="defaultList"
            :on-success="handleSuccess"
            :format="['jpg','jpeg','png']"
            :max-size="2048"
            :on-format-error="handleFormatError"
            :on-exceeded-size="handleMaxSize"
            :before-upload="handleBeforeUpload"
            multiple
            :headers="tokenData"
            type="drag"
            :action="uploadUrl"
            style="display: inline-block;width:58px;">
            <div style="width: 58px;height:58px;line-height: 58px;">
                <Icon type="camera" size="20"></Icon>
            </div>
        </Upload>
        <Modal title="查看图片" v-model="visible">
            <img :src="imgName" v-if="visible" style="width: 100%">
        </Modal>
    </div>
</template>
<script>
    import API from '../config/api'

    export default {
        props: ['imgUrl', 'imgLength'],
        data() {
            return {
                imgName: '',
                imgBaseUrl: '',
                visible: false,
                uploadList: [],
                uploadUrl: process.env.BASE_URL + API.UPLOAD_FILE,
                tokenData: {
                    token: this.$store.state.userData.token
                }
            }
        },
        methods: {
            handleView(name) {
                this.imgName = name;
                this.visible = true;
            },
            handleRemove(file) {
                // 从 upload 实例删除数据
                const fileList = this.$refs.upload.fileList;
                this.$refs.upload.fileList.splice(fileList.indexOf(file), 1);
                this.$emit('getImgUrl', '')
            },
            handleSuccess(res, file) {
                // 因为上传过程为实例，这里模拟添加 url
                if (res.code == 200){
                    file.url = process.env.BASE_URL+'/' + res.data.path;
                    file.name = res.data.name;
                    file.id = res.data.id;
                    this.uploadList = this.$refs.upload.fileList;
                    this.$emit('getImgUrl', file);
                }
                // this.imgBaseUrl = res.data.baseUrl;
            },
            handleFormatError(file) {
                this.$Notice.warning({
                    title: '文件格式不正确',
                    desc: '文件 ' + file.name + ' 格式不正确，请上传 jpg 或 png 格式的图片。'
                });
            },
            handleMaxSize(file) {
                this.$Notice.warning({
                    title: '超出文件大小限制',
                    desc: '文件 ' + file.name + ' 太大，不能超过 2M。'
                });
            },
            handleBeforeUpload() {
                const check = this.uploadList.length < this.imgLength;
                if (!check) {
                    this.$Notice.warning({
                        title: '最多只能上传 1 张图片。'
                    });
                }
                return check;
            }
        },
        mounted() {
            this.uploadList = this.$refs.upload.fileList;
        },
        computed: {
            defaultList() {
                let imgArray = [];
                switch (typeof this.imgUrl) {
                    case 'string':
                        if (this.imgUrl){
                            imgArray.push({
                                url: this.imgUrl,
                                name: 'yyzz'
                            });
                        }
                        break;
                    case 'object':
                        this.imgUrl.map((item) => {
                            imgArray.push({
                                url: item.goods_image_path,
                                name: item.goods_image_id
                            })
                        });
                        break;
                }
//                if (typeof this.imgUrl == 'string') {
//                    imgArray.push({
//                        url: this.imgUrl,
//                        name: 'yyzz'
//                    })
//                } else {
//                    this.imgUrl.map((item) => {
//                        imgArray.push({
//                            url: item.goods_image_path,
//                            name: item.goods_image_id
//                        })
//                    })
//                }
                return imgArray;
            }
        }
    }
</script>
<style scoped>
    .demo-upload-list {
        display: inline-block;
        width: 60px;
        height: 60px;
        text-align: center;
        line-height: 60px;
        border: 1px solid transparent;
        border-radius: 4px;
        overflow: hidden;
        background: #fff;
        position: relative;
        box-shadow: 0 1px 1px rgba(0, 0, 0, .2);
        margin-right: 4px;
    }

    .demo-upload-list img {
        width: 100%;
        height: 100%;
    }

    .demo-upload-list-cover {
        display: none;
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, .6);
    }

    .demo-upload-list:hover .demo-upload-list-cover {
        display: block;
    }

    .demo-upload-list-cover i {
        color: #fff;
        font-size: 20px;
        cursor: pointer;
        margin: 0 2px;
    }
</style>
